Clutch.



G. V. HARRIMAN.

CLUTCH.

APPUCATION nuzo MAY 5. 1915.

1,191,893. Q 'PatentedJulylS, 1916."

Sum M I gew-yezzf afz'a nmivw W Mm Qbbomwq/ ms NORM: FEYERS on Puma-mm. WASHINONN, a. c.

GEORGE V. HARRIMAN, OF NEW YORK, N". Y.

V CLUTCH.

Original application filed December 16, 1914, Serial No. 877,570. Divided and this application filed May 5,

Specification of Letters Patent.

Patented July 18,1916.

1915. Serial No. 26,065.

T 0 all whom it may concern:

Be it known that 1, Gnonen V. I'IARRIMAN, a citizen of the United States, residing at New York, in the county and State of New York, have invented certain new and useful Improvements in Clutches, of which the following is a full, clear, and exact specification.

This invention relates to clutches especially designed for use in connection with transmission gearing for automobiles, and it has for its object to provide a simplified construction and arrangement of parts, whereby power may be transmitted noiselessly from one shaft to another and without injury to the mechanism, such changes" may be made without injurious effects, friction will be reduced to a minimum.

It is also the aim of this invention to in crease the strength and efliciency of all the wearing parts and bearing points, and to make the parts interchangeable as far as possible.

Other objects will appear as tion proceeds.

The invention will be first hereinafter described in connection with the accompanying drawings, which constitute a partof this specification, and then more specifically defined in the claims at the end of the description. c v

In the accompanying drawings, wherein similar reference characters ignate corresponding parts throughout the several views: Figure 1 is a transverse horizontal sectional view through .a casing containing portion of a transmission including two clutches constructed in accordance with the present invention. Fig. 2 is a broken vertical section through the structure shown in Fig. 1. Fig. one of the bearings for the spools which hold the threaded operating sleeves against turning. Fig. 4 is a detailed view ofone of said sleeves, and Fig. 5 is adetailed sectional view of one of said spools.

The casing or housing for the transmission mechanism is made preferably 'in' sec tions, including a middle section 10, two end sections 11 and 12, and a top or cover 13.

and

the descrip- The endwalls 10 of the middle section 10 constitute vertical partitions in the casing as a whole.

Two pairs of end to end shafts are illust ated in h drawings, e ch pair compris ng are used to des-' 3 is a detailed side view. of'

tween the ends of t e m ddle portion of s id what will be hereinafter termed a driving 1 and a driven shaft. The driving shaft 17 of one pair is the motor shaft and the other shaft 18' of that pair is the transmitting driven shaft. These two shafts are the only ones which extend beyond the casing, the other pair of shafts being entirely contained within the casing and serving to give a different speed from the motor driven shaft 17 to the transmitting shaft 18.

Theshaft 17 is journaled in the end section 11 of the casing and in the adjacent end wall 10 of the middle section of' said casing; A gear 19 is keyed to turn with said, shaft in the space between-the end section 11 and the middle section of the easing. On the inner end of the shaft 17, a friction clutch member 20 is keyed or other wise'fixed to turn therewith, and said inner end portion of said shaft is fitted with a cap 24. The shaft 18 is journaled in the end section 12 and the other end wall 10 of the middle section of the casing. A gear 26 is keyed on the shaft 18in the end section 12 of the casing. shaft 18 extends into the clutch member 20 and is fitted with an inner friction clutch member 28 supplementary to the clutch member 20. Said clutch member 28 is splined on the shaft 18 and ispreferably conical and designed to enter a cone cup onthe clutch member 20. The other pair of shafts 17' and 18 carry gears 19 and 26 respectively, and are fitted with: supplemental. clutch members 20 and 28%, respectively. The shaft 17 is fitted with a cap 24 similar to the cap 24. The structure of the clutch being the same on each pair of shafts,

these bearings being "disposed between theannular surface of the clutch member 20 and a suitable opening 23 in the wall 10 of the middle section of the casing and the inner annular surface of the cap 2 1?, and be- The clutch member 28- is 29 fitted loosely around clutch member cap, respectively. actuated by a sleeve The inner end of thesaid clutch member and between shoulders or flanges 30 and 31. An antifriction bearing 32 is placed between the shoulder 30 adjacent the cone, and the corresponding end of the sleeve 29 to take the thrust in operation. Said sleeve is guided in spools 33 having keys 34: fitted to slide in axial grooves 35 in the sleeve 29. The spools 33 are arranged in notches in narrow transverse partitions 36 in the middle section of the casing, and are retained in said notches by straps 37, see Fig. 3. Said spools are held against turning by set screws 38 passed through the straps 37. As shown in Fig. l,

7 two spools 33 are used, and between them is arranged a worm gear 39 having its bore threaded to engage the correspondingly threaded outer surface of the sleeve 29. The spools being'held against turning by the set screws 38, and said sleeve being held against turning within the spools by the keys 34 engaging the slots 35, it is evident that rotation of the 'worm gear 39 will move the sleeve 29 axially, owing to the threaded con nection between said gear and sleeve, and

that the axial movement of the sleeve will impart a similar movement to the clutch member 28', tending to advance the same into driving connection with the supplemental clutch member 20, or vice. versa.

The worm gear 39 and: corresponding Worm gear for operating the clutch member 28, are adapted to be simultaneously actuated by a transverse rock shaft 42 having oppositely inclined worm gear sections ll adapted to mesh with the concave peripheries 40 of said worm gears 39. The rock shaft 42 is provided with a wrench surface 43 on its projecting end for connection by any suitable means (not shown) to a controlling device in reach of the driver of the automobile. Of course, the rock shaft may be placed in a neutral position, when both clutches-will be thrown out. lVhen one clutch is thrown in, the other clutch is simultaneously thrown out on account of the oppositely inclined 'worm gear sections 11 on the rock shaft 42.

This application is a division of my pending application for t'ansmission for automobiles, filed December 16, 1914, Ser. No. 877,570. 7

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is r- 1. The combination with a driving and a driven shaft arranged end to end, of a clutch member fixed on one of said shafts, a supplemental clutch member splined on the other shaft and having oppositely facing shoulders, a threaded sleeve fitted loosely around said supplemental clutch member be tween said shoulders, means for holding said sleeve against turning but permitting it to move axially, a worm gear retained against axial movement and having internal threads engaging said sleeve, and means for actuating said worm gear for moving said splined clutch member into and out of driving connection with the other clutch member.

2. The combination with a driving and a driven shaft arrange-d end to end, of a clutch member fixed on one of said shafts, a supplemental clutch member splined on the other shaft and having oppositely facing shoulders, a threaded sleeve fitted loosely around said supplemental clutch member between said shoulders, an antifriction bearing inter posed between the shoulder, which is nearer the other clutch member, and the adjacent end of the sleeve for taking the thrust, means for holding said sleeve against turning but permitting it to move axially, and an internally threaded operating member engaging said sleeve and retained against axial movement for. moving said splined clutch member into and out of driving con nection with the other clutch member.

3. The combination with a driving and a driven shaft arranged end to end, of a clutch member keyed to one shaft, a journal cap housing the rear end of said clutch member,

antifriction bearings arranged between the annular surface of said clutch member and inner annular surface of said cap, and between the ends of said clutch member and cap, a supplemental clutch member splined on the other shaft, and means for moving said splined clutch member into and out of driving connection with the other clutch member.

l. The combination with a driving and a driven shaft arranged end to end, a clutch member fixed on one shaft, a splined clutch member on the other shaft, a sleeve fitted loosely around said splined clutch member and having threads upon its outer surface and axial grooves across said threads, spools retained against movement and provided with keys engaging the grooves in said sleeve, an operating member arranged between said spools and having internal threads engaging the threads on the sleeve, and means whereby the longitudinal movement of the sleeve will actuate the splined clutch member.

In testimony whereof I have signed my name to this specification.

GEORGE V. HARRIMAN.

Copies of this patent mayobtained for five cents each, by addressing the Commissioner of Patents,

. Washington, D. C, 

